Not sure about the "Only 500 released" bit. I saw Kid Koala live around 2002 and at the end of the night I was able to purchase a cassette with the original artwork etc. - unless of course this was one of the 500 copies.

Although upon first listen, this release may seem monotonous, there are sublte shifts in the sound sculpting. To really appreciate this release, it must be heard on a massive sound system. Decompression's bassline is just devastating - for the listener and the dancefloor.